/*
* (C) 2007-2012 Alibaba Group Holding Limited.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* Authors:
* wuhua <wq163@163.com> , boyan <killme2008@gmail.com>
*/
package com.taobao.metamorphosis.server.utils;
import static org.junit.Assert.assertEquals;
import java.util.concurrent.atomic.AtomicLong;
import org.junit.Test;
import com.taobao.metamorphosis.utils.test.ConcurrentTestCase;
import com.taobao.metamorphosis.utils.test.ConcurrentTestTask;
public class SystemTimerUnitTest {
@Test
public void testPerformance() {
System.out.println(testSystem() / testSystemTimer());
}
@Test
public void testCurrentTimeMillis() throws Exception {
final long start = SystemTimer.currentTimeMillis();
Thread.sleep(1000);
final long end = SystemTimer.currentTimeMillis();
System.out.println(end - start);
assertEquals(1000L, end - start, 50L);
}
private static long testSystem() {
final AtomicLong result = new AtomicLong(0);
final ConcurrentTestCase testCase = new ConcurrentTestCase(50, 400000, new ConcurrentTestTask() {
public void run(final int index, final int times) throws Exception {
result.addAndGet(System.currentTimeMillis());
}
});
testCase.start();
System.out.println("System:" + result.get());
return testCase.getDurationInMillis();
}
private static long testSystemTimer() {
final AtomicLong result = new AtomicLong(0);
final ConcurrentTestCase testCase = new ConcurrentTestCase(50, 400000, new ConcurrentTestTask() {
public void run(final int index, final int times) throws Exception {
result.addAndGet(SystemTimer.currentTimeMillis());
}
});
testCase.start();
System.out.println("SystemTimer:" + result.get());
return testCase.getDurationInMillis();
}
}